The "register" device is only used by certain machines. Let's add
a proper config switch for it so that it only gets compiled when we
really need it.

Message-Id: <20190817101931.28386-5-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 hw/Kconfig            | 1 +
 hw/core/Kconfig       | 3 +++
 hw/core/Makefile.objs | 2 +-
 hw/dma/Kconfig        | 1 +
 4 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/hw/Kconfig b/hw/Kconfig
index dbae1c0852..b45db3c813 100644
--- a/hw/Kconfig
+++ b/hw/Kconfig
@@ -76,3 +76,4 @@ config XILINX_AXI
 
 config XLNX_ZYNQMP
     bool
+    select REGISTER
diff --git a/hw/core/Kconfig b/hw/core/Kconfig
index c2a1ae8122..d11920fcb3 100644
--- a/hw/core/Kconfig
+++ b/hw/core/Kconfig
@@ -9,3 +9,6 @@ config FITLOADER
 
 config PLATFORM_BUS
     bool
+
+config REGISTER
+    bool
diff --git a/hw/core/Makefile.objs b/hw/core/Makefile.objs
index f8481d959f..d6cfb2a81b 100644
--- a/hw/core/Makefile.objs
+++ b/hw/core/Makefile.objs
@@ -17,7 +17,7 @@ common-obj-$(CONFIG_SOFTMMU) += machine.o
 common-obj-$(CONFIG_SOFTMMU) += loader.o
 common-obj-$(CONFIG_FITLOADER) += loader-fit.o
 common-obj-$(CONFIG_SOFTMMU) += qdev-properties-system.o
-common-obj-$(CONFIG_SOFTMMU) += register.o
+common-obj-$(CONFIG_REGISTER) += register.o
 common-obj-$(CONFIG_SOFTMMU) += or-irq.o
 common-obj-$(CONFIG_SOFTMMU) += split-irq.o
 common-obj-$(CONFIG_PLATFORM_BUS) += platform-bus.o
diff --git a/hw/dma/Kconfig b/hw/dma/Kconfig
index 751dec5426..5c61b67bc0 100644
--- a/hw/dma/Kconfig
+++ b/hw/dma/Kconfig
@@ -16,6 +16,7 @@ config I8257
 
 config ZYNQ_DEVCFG
     bool
+    select REGISTER
 
 config STP2000
     bool
-- 
2.18.1